Mostagi Fernanda Qrc, Silva Pedro Ac, Munaro Giovana R, Marcato Raiane G, Nampo Daniel B, Santiago Gabriel F, Obara Karen, Cardoso Jefferson R
Laboratory of Biomechanics and Clinical Epidemiology, PAIFIT Research Group Universidade Estadual de Londrina.
Int J Sports Phys Ther. 2024 Oct 1;19(10):1244-1254. doi: 10.26603/001c.123471. eCollection 2024.
The comprehensive treatment for an athlete who sustains a complete posterior cruciate ligament (PCL) injury remains unclear. The purpose of this case report is to describe the effects of an isokinetic exercise program on muscle performance and physical function in a professional soccer player with a PCL injury.
Case Report.
A 23-year-old male professional soccer player injured his right knee (non-dominant) during a soccer match, with magnetic resonance imaging confirming a complete PCL rupture. The athlete completed 23 sessions of isokinetic treatment over nine weeks to improve physical function and muscle performance. The concentric mode was used to evaluate quadriceps and hamstrings performance isokinetically at angular velocities of 60 °/s, 120 °/s, and 300 °/s. The LEFS questionnaire was used to evaluate physical function. The assessment occurred before starting the treatment and at the end of nine weeks. An athlete with similar anthropometric characteristics was invited to participate and serve as a control, in order to better understand the athlete's assessment results.
After nine weeks, peak torque normalized to body mass (PT/BM) improved to 4.0 N.m/kg for knee extensors (control: 3.6 Nm/kg) and 2.3 N.m/kg for knee flexors (control: 1.9 Nm/kg) at 60 °/s. This increase in PT was reflected in the hamstrings-to-quadriceps (H:Q) ratio post-treatment (57 %). At the end of treatment, the athlete returned to sports activities with 98.7 % restored physical function as measured by the LEFS (Score: 79 points).
The results demonstrated that the isokinetic treatment improved knee functional capacity, with increased PT/BM for knee extensors and flexors and enhanced torque-holding capacity, indicating improved muscle performance.
对于一名遭受完全性后交叉韧带（PCL）损伤的运动员的综合治疗方法仍不明确。本病例报告的目的是描述等速运动训练计划对一名患有PCL损伤的职业足球运动员肌肉性能和身体功能的影响。
病例报告。
一名23岁的男性职业足球运动员在一场足球比赛中右膝（非优势腿）受伤，磁共振成像证实为完全性PCL断裂。该运动员在九周内完成了23次等速运动治疗，以改善身体功能和肌肉性能。采用向心模式在60°/秒、120°/秒和300°/秒的角速度下对等速评估股四头肌和腘绳肌的性能。使用LEFS问卷评估身体功能。评估在治疗开始前和九周结束时进行。邀请一名具有相似人体测量特征的运动员参与并作为对照，以便更好地理解该运动员的评估结果。
九周后，在60°/秒时，膝伸肌的体重标准化峰值扭矩（PT/BM）提高到4.0 N·m/kg（对照组：3.6 Nm/kg），膝屈肌的体重标准化峰值扭矩提高到2.3 N·m/kg（对照组：1.9 Nm/kg）。PT的这种增加反映在治疗后的腘绳肌与股四头肌（H:Q）比率上（57%）。治疗结束时，根据LEFS测量，该运动员恢复了98.7%的身体功能，回到了体育活动中（得分：79分）。
结果表明，等速运动治疗改善了膝关节功能能力，膝伸肌和膝屈肌的PT/BM增加，扭矩保持能力增强，表明肌肉性能得到改善。
5级。
